POLYPODIACEAE. 13 



5. Dkvopteeis Goldieaxa (Hook.) A. Gray. M. p. 15. Rich woods. Smn- 



nier. 



Philadelphia— ^iassihickon Creek above Manayunk, Mart. (B. C), 

 Pennypack (Re.). 5wcA's— Springfield (Fr.). Montgomery— {P.). Dela- 

 ware— Bishop's Mills (Fu.), Concord (W. Tr.), Middletown (S. Tr.). 

 Chester— (P.). BerAs— Reading (P.). Le/n^/Zi— Lehigh Mountain (Kr.). 

 N 01-thampt on— 'Easton (Ca.). 



New Castle— 'Brajady wine, Tatnall; Harvey, Commons and Tatnall. 



6, Drvopteris marginalis (L.) A. Gray. M. p. 15. Rocky woods. Sum- 



mer. 

 7a. Dryopteris spinulosa intermedia (Muhl.) Underw. M. p. 16. Woods. 

 Summer. 

 Pennsylvania — General. 

 7&. Dryopteris spinulosa dilatata (Hoffm.) Underw. M, p. 16. Woods. 

 Summer. 

 Pennsylvania— GQUQT^i. 



8. Dryopteris Boottii (Tuckerm.) Underw. M. p. 16. Moist woods. 

 Summer. 

 Philadelphia— (P.). Montgomery— (P.). BerJcs—Heistev (P.). 

 Neiv Castle — 2 miles S. W. of Wilmington, Commons. 



11. PHEGOPTERIS Fee. Beech Fern. 



Leaves triangular, 2-pinnatifid; pinnae sessile, adnata to the winged rachia. 

 Leaves longer than broad, usually dark green. 1. P. Phegopteris. 

 Leaves as broad as long or broader, usually light green. 



2. P. hexagonoptera. 

 Leaves ternate, with the three divisions petioled; rachis wingless. 



3. P. Dryopteris. 



1. Phegopteris Phegopteris (L.) Underw. M. p. 16. Damp woods. Sum- 



mer. 

 Philadelphia— GTSiY&r 'a Lane Station (C. E. S.). Lehigh— Lia-nTei Hill 

 (Kr.). Northampton— Maston Creek (P.). 



2. Phegopteris hexagonoptera (Michx.) Fee. M. p. 16. Open woods. 



Summer. 



3. Phegopteris Dryopteris (L.) Fee. Oak Fern. M. p. 17. Moist woods 



and swamps. Summer. 

 Philadelphia— GraveT 's Lane Station (C. E. S.). lfoni<70?ner^— Rock- 

 ledge (Br.). IfeZaware — Wallingf ord (Ca.) (Pr.), Chester — (P.). 

 Lancaster— Peach Bottom (Cr.) (Le.). A''ori/iam2->io?i— Glendon (P.). 



12. FILIX Adans. Bladder Fern. 



Leaves broadest at base, long-tapering, bearing bulblets beneath. 



1. F. bulb if era. 

 Leaves scarcely broader at base, short-pointed; no bulblets. 2. F. frag ills. 



1. FiLix bulbifera (L.) Underw. M. p. 17. Shaded ravines. Summer. 

 BwcAs— Narrowsville, Point Pleasant (Ws.). Montgomery— Conaho- 

 hocken, E. Durand {B. C). Chester— Goatesville (lie.) (St.). Lancaster 

 — Conestoga (Cr.) (Gi.), Pequea Creek (Pr.). Le/iif/J'i— Hokendauqua 

 Creek, Rockdale (Kr.). Northampton— 'Wind Gap (He.). 



